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公开(公告)号：US20220035001A1
公开(公告)日：2022-02-03
申请号：US16941810
申请日：2020-07-29
Applicant: Apple Inc.
Inventor： Harsha Shirahatti , Sujeet Milind Patole , Jouya Jadidian , Mikheil Tsiklauri , Shun Liu , Vaneet Pathak , Lei Wang , Kumar Gaurav Chhokra
Abstract: An electronic device may utilize various methods or systems to determine whether the electronic device is indoors or outdoors. The electronic device transmits wireless signals (e.g., radio detection and ranging (RADAR) signals). The electronic device receives reflections of the wireless signals. Using these received reflections of the wireless signals, the electronic device determines whether a power amplitude of the reflections is greater than or equal to a threshold value. In response to a determination that the power amplitude is not greater than or equal to the threshold value, the electronic device operates in an outdoor mode or an indoor mode.
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公开(公告)号：US10171946B2
公开(公告)日：2019-01-01
申请号：US15275133
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Glenn Donald MacGougan , Changlin Ma , Kumar Gaurav Chhokra , Robert Mayor
IPC: H04W4/02 , H04B1/3827 , H04W4/029
Abstract: Systems, methods, devices and computer-readable storage mediums are disclosed for assisted GNSS velocity estimation. In an implementation, a method comprises: obtaining, by a mobile device, a step-based speed measurement based on sensor data; obtaining, by the mobile device, a step-based speed uncertainty associated with the step-based speed measurement; determining, by the mobile device, that one or more assistance conditions are met; responsive to the determining, assisting a state estimator using the step-based speed measurement and the associated step-based speed uncertainty; and estimating at least one of the position, velocity or speed of the mobile device using the assisted state estimator.
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公开(公告)号：US09945956B2
公开(公告)日：2018-04-17
申请号：US14848234
申请日：2015-09-08
Applicant: Apple Inc.
Inventor： Kumar Gaurav Chhokra , Glenn Donald MacGougan
IPC: G01S19/12
CPC classification number: G01S19/12 , G01S19/39 , G01S19/42 , G01S19/428 , G01S19/52
Abstract: Techniques for GNSS positioning using three-dimensional (3D) building models are described. A processor of a mobile device can determine a lower bound of uncertainty for an estimated position of the mobile device. The processor can receive an estimated position from a GNSS receiver of the mobile device. The processor can acquire geographic feature data including 3D building models of buildings and other geographic features that are located near the estimated position and may reflect GNSS signals. The processor can then determine a lower bound of uncertainty of the estimated position, regardless of an estimated uncertainty provided by a GNSS estimator. The lower bound can be higher (e.g., have a greater error margin) than the uncertainty value provided by the GNSS estimator. The processor can then present the estimated position, in association with an error margin corresponding to the lower bound of uncertainty, on a map user interface of the mobile device.
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公开(公告)号：US20170359694A1
公开(公告)日：2017-12-14
申请号：US15275236
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Bradley Joel Jensen , Glenn Donald MacGougan , Kumar Gaurav Chhokra , Robert Mayor , Ronald K. Huang , Stephen J. Rhee
Abstract: Techniques for location source control for paired devices are described. Location source control selects a location source for a mobile device. The mobile device can receive, from an application program, a request for determining a location of the mobile device. The mobile device can determine a first location estimate using a location subsystem of the mobile device. The mobile device can determine whether to provide the first location estimate as input to the application program, or to provide a second location estimate as input to the application program. The second location estimate can be an estimated location of the companion device and determined by the companion device.
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公开(公告)号：US20170357005A1
公开(公告)日：2017-12-14
申请号：US15275299
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Jonathan M. Diamond , Glenn Donald MacGougan , Kumar Gaurav Chhokra , Robert Mayor , Yishuang Geng
Abstract: Techniques for improving positioning performance using categorization of navigation signal environment are described. A mobile device can receive signal environment data. The signal environment data can represent multiple geographic areas. The signal environment data includes a respective signal environment category for each geographic area, each signal environment category corresponding to a degree to which geographic features in the respective geographic area affect reception of the navigation signals. The mobile device can determine that the mobile device is located in a particular geographic area represented in the signal environment data. The mobile device can then select a set of one or more rules for aiding location estimation. The set of one or more rules can correspond to the signal environment category of the geographic area. The mobile device can estimate a location of the mobile device using the navigation signals and under the set of one more rules.
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Patent Agency Ranking
公开(公告)号：US12066344B2
公开(公告)日：2024-08-20
申请号：US17163180
申请日：2021-01-29
Applicant: Apple Inc.
Inventor： Lei Wang , William J. Bencze , Kumar Gaurav Chhokra , Fatemeh Ghafoori , Stephen P. Jackson , Cheng Jia , Yi-Wen Liao , Glenn D. Macgougan , Isaac T. Miller , Alexandru Popovici , Christina Selle , Aditya Narain Srivastava , Richard Warren , Michael P. Dal Santo , Pejman Lotfali Kazemi
CPC classification number: G01L27/005 , H04W4/025 , H04W4/38 , H04W4/90
Abstract: Described herein are techniques to enable a mobile device to perform multi-source estimation of an altitude for a location. A baseline altitude may be determined at ground level for a location and used to calibrate a barometric pressure sensor on the mobile device. The calibrated barometric pressure sensor can then estimate changes in altitude relative to ground level based on detected pressure differentials, allowing a relative altitude to ground to be determined. Baseline calibration for the barometric sensor calibration can be performed to determine an ambient ground-level barometric pressure.
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公开(公告)号：US11747441B2
公开(公告)日：2023-09-05
申请号：US16941810
申请日：2020-07-29
Applicant: Apple Inc.
Inventor： Harsha Shirahatti , Sujeet Milind Patole , Jouya Jadidian , Mikheil Tsiklauri , Shun Liu , Vaneet Pathak , Lei Wang , Kumar Gaurav Chhokra
Abstract: An electronic device may utilize various methods or systems to determine whether the electronic device is indoors or outdoors. The electronic device transmits wireless signals (e.g., radio detection and ranging (RADAR) signals). The electronic device receives reflections of the wireless signals. Using these received reflections of the wireless signals, the electronic device determines whether a power amplitude of the reflections is greater than or equal to a threshold value. In response to a determination that the power amplitude is not greater than or equal to the threshold value, the electronic device operates in an outdoor mode or an indoor mode.
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公开(公告)号：US20210396619A1
公开(公告)日：2021-12-23
申请号：US17163180
申请日：2021-01-29
Applicant: Apple Inc.
Inventor： Lei Wang , William J. Bencze , Kumar Gaurav Chhokra , Fatemeh Ghafoori , Stephen P. Jackson , Cheng Jia , Yi-Wen Liao , Glenn D. Macgougan , Isaac T. Miller , Alexandru Popovici , Christina Selle , Aditya Narain Srivastava , Richard Warren , Michael P. Dal Santo , Pejman Lotfali Kazemi
Abstract: Described herein are techniques to enable a mobile device to perform multi-source estimation of an altitude for a location. A baseline altitude may be determined at ground level for a location and used to calibrate a barometric pressure sensor on the mobile device. The calibrated barometric pressure sensor can then estimate changes in altitude relative to ground level based on detected pressure differentials, allowing a relative altitude to ground to be determined. Baseline calibration for the barometric sensor calibration can be performed to determine an ambient ground-level barometric pressure.
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公开(公告)号：US10078138B2
公开(公告)日：2018-09-18
申请号：US14848241
申请日：2015-09-08
Applicant: Apple Inc.
Inventor： Kumar Gaurav Chhokra , Glenn Donald MacGougan
Abstract: Techniques for GNSS positioning using three-dimensional (3D) building models are described. A processor can determine a probable path for a signal from a GNSS space vehicle (e.g., a satellite) to reach the GNSS receiver. The probable path can include one or more specular reflections. The processor can determine a Doppler correction based on the probable path, including inverting a sense of a vector of the Doppler correction for each reflection. The processor can then incorporate the Doppler correction in an estimated velocity of the mobile device, an estimated position of the mobile device, or both.
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公开(公告)号：US20170347239A1
公开(公告)日：2017-11-30
申请号：US15275133
申请日：2016-09-23
Applicant: Apple Inc.
Inventor： Glenn Donald MacGougan , Changlin Ma , Kumar Gaurav Chhokra , Robert Mayor
IPC: H04W4/02 , H04B1/3827
Abstract: Systems, methods, devices and computer-readable storage mediums are disclosed for assisted GNSS velocity estimation. In an implementation, a method comprises: obtaining, by a mobile device, a step-based speed measurement based on sensor data; obtaining, by the mobile device, a step-based speed uncertainty associated with the step-based speed measurement; determining, by the mobile device, that one or more assistance conditions are met; responsive to the determining, assisting a state estimator using the step-based speed measurement and the associated step-based speed uncertainty; and estimating at least one of the position, velocity or speed of the mobile device using the assisted state estimator.
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